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Residential Mortgage Loans Held in Securitization Trusts, Net and Real Estate Owned - Narrative (Details) $ in Thousands | 6 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2018 USD ($) loan | Dec. 31, 2017 USD ($) loan | Jun. 30, 2017 USD ($) | Dec. 31, 2016 USD ($)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |  |
Allowance for loan losses | $ 3,844 | $ 4,191 | $ 3,983 | $ 3,782
Allowance for loan losses, basis points | 5.54% | 5.41% |  |
Real estate owned held in residential securitization trusts | $ 100 | $ 100 |  |
CDOs outstanding | $ 4,900 | $ 4,400 |  |
Residential Mortgage Loans Held in Securitization Trusts and Real Estate Owned Held in Residential Securitization |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |  |
Number of delinquent loans | loan | 24 | 26 |  |
Principal amount of delinquent loans | $ 15,000 | $ 16,500 |  |
Residential Mortgage Loans Held in Securitization Trusts and Real Estate Owned Held in Residential Securitization | Payment Deferral |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |  |
Principal amount of delinquent loans | $ 6,700 | $ 10,200 |  |
Delinquent loans under modified payment, percent | 45.00% | 62.00% |  |

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- Definition Represents Company’s net investment in the residential securitization trusts, which is the maximum amount of the Company’s investment that is at risk to loss and represents the difference between (i) the carrying amount of the mortgage loans and real estate owned held in residential securitization trusts and (ii) the amount of Residential CDOs outstanding. + References No definition available. + Details
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- Definition Represents allowance for loan losses expressed as basis points of the outstanding principal balance of residential loans held in securitization trusts. + References No definition available. + Details
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- Definition Represents the percentage of delinquent loans that are currently under some form of modified payment plan. + References No definition available. + Details
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- Definition The aggregate number of delinquent loans. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of principal due on delinquent mortgage loan within investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Paragraph Column H -Subsection 29 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29(Column H)) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 + Details
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- Definition A valuation allowance for financing receivables that are expected to be uncollectible. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition Carrying amount as of the balance sheet date of land and buildings obtained through foreclosure proceedings or defeasance in full or partial satisfaction of a debt arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5162-111524 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4437-111522 + Details
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- Details
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- Details
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